Cylinder for internal-combustion engines.



H. A. HALL.

CYLINDER FOR tNTERNAL COMBUSHON ENGINES.

APPLICAUDN HLED FEB. 9. 19x8.

1 I 337 Patented July 30, 1918.

F/gurv 4 6 A F/gure 1 Figure 3 IN VE N TOR IIAR OLDA-H A LL BY vATTORNE).

, proportions,

UNITED STATES OFFICE.

HAROLD A. HALL, 01 SAN JOSE, CALIFORNIA. CYLINDER FOBINTERNAL'COMBUS'IION ENGINES.

To all whom it may concern;

Be it known that I, HAROLD A. HALL, a citizen of the United States,residing at San Jose, in the county of Santa Clara and State ofCalifornia, have invented a new and useful Improvement in Cylinders forInternal-Combustion Engines, of which the following is a specification.

My invention relates to a cylinder for internal combustion engines, andthe objects of my invention are:

First, to provide wcylinder for internal combustion engines that -willhave four valve ports, two of which are intake valve ports and two areexhaust valve ports; and one in which the valves and valve guides arelaced in thehead of the cylinder, and one in which the valves operateparallel with the axis of the cylinder and not at an angle thereto or inadditional valve chambers a is commonly the ractice.

Second, to provide a cylinder for internal combustion engines that willhave positive cooling water circulation in all parts of the coolingwater compartments, and one in which the'water compartments are dividedinto a plurality of separate water channels.

Third, to provide a cylinder for internal combustion engines that willhave no anlar explosion chamber recesses, and one m which the ower lossderived from the explosion will e less than in cylinders now in neraluse for this class of en 'nes.

ourth, to provide a cylinder or internal combustion engines that is morereadily machined and one in which the cost of manufacture is reduced ascompared to cylinders of this tye now in use. 0

A furt er object, of my invention is to generally im rove this class ofcylinders for internalcom ustion en es so as to increase theirusefulness, dura ility, and ,efiiciency.

Further objects and advantages will appear inthe following descriptionlt being understood that varlous changes in form,

and minor details .of construction may be the appended claims.

For a full understanding of thelnventlon and the merits thereof,reference is to be had to the following description and accompartrlyingdrawings, in which:

ment in cylinders for internal combustion Specification Letters ratcnt.Application filed February 9, 1918. Serial Ila-16,324.

resorted to within the scope of Lie a plan view of my improve-' PatentedJuly '30, 1918.

ylinder 'to in the followin description and indicated in all the views 0the drawings by the same reference numbers. V

M improvement in cylinders for internal com ustion engines, forming thesubject matter of the present invention comprises a body ortion 1 madeof cast'iron or other suitab e metal consisting of a cylinder 2, watercoolin compartments 3, water jacket 3 and cylin er head 3".

' At the .upper end of cylinder 2 are the valve seats 4,'valve ports 4,valves 5, and ,valve stems 5". These. valves operate in valve guides 5".

Valves 5 are for the purpose of mechanicall controlling the intake andexhaust of exp osive charges and burnt gases respectively, in and out ofcylinder 2 by means of inlet port 6 and exhaust 'port 7, said valvesbeing operated by any suitable mechanism not shown.

Near the upper end of cylinder 2 is shown a plurality of openings 8 forthe purpose of attaching any. suitable ignition system, preferably. whatis commonly known" as the outer walls thereof, is the circular flange 9adapted to hold the body portion 1 in place on any. suitable crank case,crank case not shown.

Atthe lower end of coolin water coinartments 3 is shown a plum it ofwater inlets 10 adapted to be connects to a suitable systm of pump orthermo-siphon sys- "tem of cooling water circulation not shown.

'At the'top of the body portion 1 in the cylinder head 3 is shown aplurality of cooling ateroutlets 11, one of said outlets being, placed'in the center of the cylinder head 3 and between the four valve uides 3into a plurality of water circulating chambers is the web 12 which isshown in longitudinal section at 12 in Fig. 2, This web is for thepurpose of causing the circulation of the cooling water to be more equaland direct to all parts of the water compartments.

The operation of my improved cylinder is as follows:

Valves 5 bein mechanically controlled, regulate the intaEe of explosivecharges and exhaust of burnt gas at predetermined periods through theplurality of valve ports 4*, thereby obtaining a quicker and moreefficient change of explosive charges. Cooling water enters the coolingwater-compartments 3 through a plurality of inlet ports 10, being keptin proper channels by means of web 12, and is forced up to and aroundexhaust port 7 and inlet port 6 and valve guides 5 as shown by thearrows. The cooling water is discharged from the compartments 3 througha plurality of outlets 11. This arrangement will cool the cylinder andcylinder head more etliciently than the methods now in use.

Having thus described my invention, what I claim as new and desire tosecure by Letbers Patent is:

1. In an improvement in cylinders for internal combustion engines of theclass described comprising a cylinder, a plurality ofcoolin watercompartments adjacent the walls and ends of said cylinder, saidcompartments being intercommunicatin a plurality of openings at thelower en of said compartments, adapted to admit water to saidcompartments, a plurality of-cooling @ports, an exhaust plurality of theva ve ports,

water outlets at the top of the compartments, a centrally locatedcooling water outlet at the top of the cylinder head, a web orpartition, adapted to divide the water compartments into separate watercirculating channels, substantially as shown and described.

2. In an improvement in cylinders for internal combustion engines of theclass described, the combination of a body portion made of cast iron orother suitable metal, a cylinder, a plurality of cooling watercompartments adjacent said cylinder, a water jacket, a cylinder head, aplurality of valve seats in the cylinder head, a plurality of valveports connecting with said valve seats, valves adapted to engage saidvalve seals, valve stems attached to the valves, valve guides centrallypositioned over each valve seat their longitudinal axis being parallelwith the axis of the cylinder, an inlet port connection with a pluralityof the valve ort connecting with a a plurality of threaded openings nearthe upper end of the cylinder adapted to receive spark plugs therein, anoutwardly extending circular flange at the lower end of the cylinder, aplurality of cooling water inlets at the lower endof the cooling watercompartments, a

plurality of cooling water outlets at the top of the cooling watercompartments, a water outlet centrally positioned between the valveguides, a web or partition through the cooling water compartmentsdividing the compartments into so arate water circulation channels,substantially as shown and described.

In testimony whereof I afiix my signature in the presence of twowitnesses.

HAROLD A. HALL. Witnesses:

O. M.- VROOMAN, J. G. MCMILLAN.

